Centering for arches.



No. 808,951. PATENTED JAN. 2, 1906.

L, SGHULLER,

OENTERING FOR ARGHEs'. APPLICATION FILED MAR.6,1905.

3 SHEETS-SHEET l.

GENTERING FOR AROHES.

APPLICATION FILED MAR. 6, 1905.

3 SHEETSSHBET 2.

' PATENTED JAN! 2; 190

L. SGHULLER. I CENTERING FOR ARGHES. I

APPLICATION FILED MABHB, 1905.

3 SHEETS-SHEET 3.

untrue srnrns PATENT OFFICE.

Specification of Letters Patent.

Patented Jan. 2, 19116 Application filed March 6,1905. Serial lilo. M8588.

To alZ whom, it may concern: Be it kpown that I, LAWRENCE SCHULLER, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful improvements in Centering for Arches, of

which the following is a specification.

My invention relates to centering mechanism, such as is commonly employed for the purpose of a temporary support in the erection of fireproof masonry floor and ceilingbe readily applied to and removed from the floor-beams, presenting a minimum of obstruction to the application of the concrete and .ermitting said fioor-beams to be completcl y embedded on their lower and vertical sides in the concrete.

A further object of the invention is to provide a centering wherein thehangers that support the center arch-plates may without change of position be subsequently utilized in the completed structure to support the coilingframe.

In the accompanying drawings, which illustrate two practical forms in which my invention may be embodied, Figure 1 is a perspective vieugotone form oi centering. Fig. 2 is a cross-sectional view showing the same with the concrete or other filling in place. Fig. 3 is a view similar to Fi 2, but showing the centering removed and il ustrating the form of arch-filling produced thereby. Fig. 4 is a perspective view similar to Fig. 1, but showing the filling in place and illustrating another form of the invention wherein the hangers serve as ermanent supports for an underlying metal ic ceiling-franie Fig. 5 is a cross-sectional.View similar to Fig. 2 of the form; of the invention illustrated in Fig. 4, showing also the application of the metal ceiling; and-Fig. 3 is a cross-sectional view on the line ii ti of Fig Referring first to Fi s. 1, 2, and 3, 10 may designate the usual 3:- eam door-girders, to which the centering is applied preliminary to the application of the masonry filling. Sus

ended -a sli ht distance below the lower aces of the ibeams by inverted-U-shaped hangers 11, hung over the latter, clu ri nel beams 12, disposed with their trough l sides uppermost, the side walls of said channels extending to a osition slightly above the lower flange of t e I-beams, as clearly shown in Fig. 2. To the outer faces oi the side walls of the channels are riveted or otherwise secured angle-irons 13, the herizontally-extending members of which constitute, in connection with the upper portions of the side walls of the channels extending above them, abutments or rests for the ends of a series or" arch-plates 14, which latter, as best shown in 1, are preferably provided on one edge with one or more pairs of inner and outer cleats 15 and 16, respectively, between Which the meeting edge ot the adjacent arch-plate is received, this construction contributing to the perfect surface alinement of the several arch-plates and the solidity and uniformity of the temporary arch as a whole. The channels 12 are suitably apertured to pass over the lower ends of the hangers 11 and are retained and supported. thereon b;- nuts 17, engaging the screw-threaded. lowr ends of said hangers, this construction. i tating the ready withdrawal of the ch when the centering is to be removed. vertical members oithe hangers 11. are erably, and as herein shown, incased in ti tubes or ferrules 18, of tin or other metal, which tubes when the centering .c moved remain in and constitute permanent parts of the filling, their function being to iacilitate the Withdrawal and subsequent reuse of the hangers.

In the form of the invention illustrated in Figs. 4. 5, and 6 the hangers are made of suitably bent stra or bar iron, said hangers be ing designate by 11.- The lot'cr ends of the han ers 11' iass throu slots in the base of the channels 12, said channels being supported by means of cross-pins 19, passed through holes formed in the nnclerlyin ends of said hangers. In this construction the hangers 11" are designed to constitute permanent parts of the structure, and art? especially appli cable where the structure is tobe equipped on its under side with a metal ceiling frame. in such a case after concrete or other filling has become hardened and set the centering is removed by knocking out the ins 39, taking down. the channels 12, and removing the arclrplates The hangers 11?- being l. i place chem e cl metal (shown at 20) in Figs. 5 and 6 are tin-.2. inserted through the apertures irthe inner ends of the ha l-iron or other forms I of the arch and transversely of the I-beams, being supported by said hangers andhaving secured t iereto the sheet-metal lathing, (indieated at 21,) to which latter may be applied a finish of plaster or cement, (indicated at 22.) This last const 1' uction is particularly applica ble in office -buildings, hotels, stores, &c., Where a more finished structure is desirable, While the construction shown in Figs. 1 9 and 3 Will serve Yell for Warehouses, factories,

with hangers adapted to be hung over the tloor-beains, ol' -hannels underlying the latter parallel therewith and suspended by said hangers, horizontal upports secured to the side Walls of said hannels, and centeringplates stepped in their ends on said hol'iZoni ta] supports. substantially as described.

2. ln :1 centering-support, the combination with inverted-l..l-shaped hangers adapted to be hung over the floor-beams, of channels underlying the latter parallel therewith and suspended on the lower ends of said hangers, angle-irons secured to the side walls of said channels, and centering-plates stepped at their'ends on said angle-irons, substantially as described.

3. In a centering-support, the combination with supporting members suspended from the floor-beams, ol a series of centering-plates rested at their ends on adjacent supporting means, said centering-plates being provided on one edge thereof with guides adapted to receive the adjacent edge of the adjacent eentering-plate, whereby to facilitate the alinement of the series of centering-plates, substantially as described.

4. .In a centering-sopport,the combination with inverted-U-shaped hangers adapted to be hung over the floor-beams, of channels underlying the latter parallel therewith and suspended on the lower ends of said hangers, angle-irons secured to the side walls of said channels, and metal arch-plates stepped at their ends on said augle-irons, substantially as described.

1 lAWlt IGNUE SCHUL! 1E R. Witnesses:

SAMUEL N. Pom), l' RIIDEJUCIC (l. GoonwIN. 

